JPH0546441Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a surgical microscope, and more specifically to a surgical microscope in which initial settings of a fine adjustment system are automated.

(Prior Art) Conventionally, in a surgical microscope used for ophthalmic surgery, for example, an initial setting is made to set the focus fine adjustment system and visual field fine adjustment system of the optical system in the microscope main body to an initial position (for example, an intermediate position of the movement range). As means for performing this, there are known methods that include a centering switch provided at an appropriate position, and a method that includes a centering switch in various types of foot switches.

However, when operating the centering switch, the operator cannot press the centering switch with clean, gloved hands, so a clean cap is required and the hands of nurses, etc. are troublesome. It was hot.

(Problem to be solved by the invention) In addition, since there are various surgical devices other than surgical microscopes in which initial settings are made by operating the centering switch in the foot switch, there is a demand for improved operability. However, there was a problem in that the number of switches increased.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a surgical microscope that can automate the initial settings of a fine adjustment system such as focus and field of view.

[Structure of the invention] (Means for solving the problem) The present invention consists of a microscope body equipped with a fine adjustment system for focus, field of view, etc., and a microscope body that extends between an actual operating area and a non-operating area. In a surgical microscope having a support arm displaceably supported, the support arm is provided with a detection means for detecting displacement of the microscope main body from an actual operating area to a non-operating area, and based on a detection signal from the detection means. The apparatus further includes a control means for controlling the initial setting of the fine adjustment system.

(Function) The function of the surgical microscope having the above configuration will be explained below.

When the microscope main body supported by the support arm is displaced from the actual operation area to the non-operation area, the detection means provided on the support arm sends out a detection signal.

The control means takes in the detection signal from the detection means and performs initial setting control of the fine adjustment system based on the detection signal.

(Example) Embodiments of the present invention will be described in detail below.

The surgical microscope 1 shown in FIG. 1 includes a support 4 configured to be able to run on a floor 2 with casters 3a and 3b provided at the bottom, a column 5 supported by the support 4, and a support arm as a support arm. It includes a first arm 6, a second arm 7, and a microscope main body 9 attached to the second arm 7 via an XY drive unit 8 as a visual field fine adjustment system.

The first arm 6 is driven vertically in the vertical direction by a coarse movement motor 13, which is one of the electrical systems 20 attached to the support column 5.

The X-Y drive section 8 drives the microscope body 9 in the X and Y directions (directions parallel to the floor 2 and directions perpendicular thereto) by an X-Y drive motor 14 that is one of the electrical systems 20. I'm starting to do that.

Further, the lens barrel 9a of the microscope main body 9 is one of the electrical systems 20 attached to the microscope main body 9,
A focus fine adjustment motor 15 constituting a focus fine adjustment system is driven over a certain range in the arrow Z ₁ and Z ₂ directions (vertical up and down directions), making it possible to finely adjust the focus on the eye E, which is an example of a surgical object. It is becoming.

The lens barrel 9a of the microscope main body 9 is a zoom optical system, and the size of the image of the surgical object is changed by a zooming motor 16, which is one of the electrical systems 20. The surgical object is illuminated by an illumination light source 17.

The first arm 6 and the second arm 7 are
As shown in FIG. There is.

The support member 18 has a U-shaped sensor holder 2.
1 is fixed. As shown in FIG. 2c, an optical sensor 24 consisting of a light emitting element 22 and a light receiving element 23 is arranged in this sensor holder 21 to form an optical path that crosses the opening of the sensor holder 21. A light shielding plate 25 is attached to the second arm 7 at a position near the sensor holder 21, and the second arm 7 is located at the position shown by the solid line in FIG. When the lower end is at position _P2 shown in FIG.
5 enters the opening of the sensor holder 21 and blocks the optical path of the optical sensor 24. Further, when the second arm 7 is at the position shown by the imaginary line in FIG. 1, that is, when the lower end of the lens barrel 9a is at the position _P1 shown in FIG. The arm 7 is adapted to be removed from the optical path of the optical sensor 24 in response to a change in position.

The optical sensor 24 and the light shielding plate 25 constitute the detection means 10.

The area where the lower end of the lens barrel 9a occupies position _P1 is defined as the actual operating area of the microscope body 9, and the area where the lower end of the lens barrel 9a occupies position _P2 is defined as the non-operating area of the microscope body 9. Explain.

Next, the control system of the surgical microscope 1 will be explained with reference to FIG.

This surgical microscope 1 includes a control means 30 that controls the electrical system 20. This control means 3
0, a detection signal from the optical sensor 24 is sent. Further, the control means 30 includes:
An operation unit (for example, a foot switch (not shown)) that sends various operation signals for operating the electrical system 20
31 is connected.

Based on the detection signal from the optical sensor 24, the control means 30 controls the focus fine adjustment motor 15,
Initial setting signals are sent to the X-Y drive motor 14 and the zooming motor 16, respectively.

Here, the initial setting signal refers to a signal for displacing the lens barrel 9a to an intermediate position of its movement range for the focus fine adjustment system, and for the visual field fine adjustment system, it refers to a signal for displacing the lens barrel 9a by the X-Y drive unit 8. This refers to a signal for displacing the lens barrel 9a to the origin position of the drive range in the X and Y directions, and for a zoom optical system, a signal for displacing the zoom optical system to its initial position.

Furthermore, the control means 30 sends drive signals to the coarse movement motor 13, the X-Y drive motor 14, the focus fine adjustment motor 15, and the zooming motor 16, based on various operation signals from the operation unit 31. At the same time, lighting control of the illumination light source 17 is also performed.

Next, the operation of the surgical microscope 1 having the above configuration will be explained, focusing mainly on initial setting control for the focus fine adjustment system and the visual field fine adjustment system.

In the initial state, the second arm 7 is
It is assumed that the microscope main body 9 is in the position shown by the imaginary line in the figure, and the microscope main body 9 is in the actual operating region shown at position _P1 , and a surgery is being performed on the eye E.

When the surgery on the eye E is completed, the operator raises the microscope main body 9 in the _Z1 direction until it reaches the non-operating area, and the second arm 7 also rotates about the connection to the support member 18 as a fulcrum. The position shown by the solid line in FIG. 1 is reached.

At this time, the light shielding plate 2 attached to the second arm 7
5 blocks the optical path of the optical sensor 24 as shown in FIG.
A detection signal, that is, a signal indicating that the microscope body 9 has been displaced from the operating area to the non-operating area is sent to the control means 30.

The control means 30 sends initial setting signals to the focus fine adjustment motor 15, the XY drive motor 14, and the zooming motor 16, respectively, based on the detection signal.

As a result, the lens barrel 9a is driven by the focus fine adjustment motor 15 and is displaced to an intermediate position in the movement range in the Z ₁ and Z ₂ directions.

Further, the X-Y drive section 8 drives the lens barrel 9a to the origin position of the drive range in the X direction and the Y direction by the operation of the X-Y drive motor 14. Furthermore, the zoom optical system is also displaced to its initial position by the operation of the zooming motor 16.

As described above, according to the surgical microscope 1 of this embodiment, the optical sensor 24 is activated by simply retracting the microscope main body 9 from the actual operating area to the non-operating area at the stage where the surgery is completed, and the focus is adjusted based on this. Fine adjustments and initial settings for the field of view adjustment system will be executed automatically.
It is possible to avoid the complexity caused by switch operations as in the conventional example, and also to improve the operability.

The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the invention.

For example, in the above-described embodiment, the displacement of the microscope body 9 from the actual operating area to the non-operating area is detected based on the rotation of the second arm 7. It is similarly applicable to microscopes.

Further, it is also possible to apply an application in which, when the main power switch of the surgical microscope 1 is turned on, an initial setting signal is sent from the control means 30 to the focus fine adjustment motor 15 and the XY drive motor 14. With such a configuration, the above-mentioned initial settings can be automatically performed by simply turning on the main power switch at the start of surgery.

[Effects of the invention] According to the invention detailed above, with the above configuration, a surgical microscope is provided which can automate the initial settings of the fine adjustment system such as focus and field of view with only simple operations. be able to.

[Brief explanation of drawings]

Fig. 1 is a side view showing a surgical microscope as an embodiment of the present invention, Fig. 2a is a partially enlarged perspective view showing the configuration of the detection means of the microscope, and Fig. 2b is a portion for explaining the operation of the same. FIG. 2C is an enlarged perspective view, FIG. 2C is an enlarged front view showing a sensor holder in the detection means, and FIG. 3 is a block diagram of the control system of this embodiment. 1... Surgical microscope, 6... First arm, 7
...Second arm, 9...Microscope body, 10...
Detection means.

Claims (1)

[Claims for Utility Model Registration] A microscope body equipped with a fine adjustment system for focus, field of view, etc., and a support arm that supports the microscope body so that it can be displaced between an actual operating area and a non-operating area. In the surgical microscope, a support arm is provided with a detection means for detecting displacement of the microscope main body from an actual operating region to a non-operating region, and initial setting control of the fine adjustment system is performed based on a detection signal from the detection means. A surgical microscope characterized by comprising a control means.